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K2-258 b | Exoplanets | Apex Andromeda | Apex Andromeda

Planets/Exoplanets/K2-258 b

Confirmed exoplanet · Neptune Like

K2-258 b

Orbiting K2-258

Discovered in 2018 using Transit. This page reflects the latest synchronized NASA Exoplanet Archive composite record.

NASA Archive record ↗Back to catalog →

Generic neptune like catalog artwork; not a direct image of K2-258 b — Generic category artwork—not a direct imageApex Andromeda catalog artwork

Discovery: 2,018
Method: Transit
Radius: 3 R⊕
Mass: 9.27 M⊕
Orbit: 19.0921 days
Distance: 661.873 pc

Planet profile

Orbit and physical properties

Orbital period: 19.0921 days
Semi-major axis: 0.149 AU
Eccentricity: Not reported by the NASA Exoplanet Archive
Radius: 3 Earth radii
Mass: 9.27 Earth masses
Mass provenance: M-R relationship
Density: 1.89 g/cm³
Equilibrium temperature: 831 K
Insolation: 84.2989 Earth flux

Host system

Star and system properties

Host star: K2-258
Stars in system: 1
Known planets in system: 1
Spectral type: Not reported by the NASA Exoplanet Archive
Stellar temperature: 6,351 K
Stellar radius: 1.31 R☉
Stellar mass: 1.21 M☉
Stellar metallicity: 0.01 dex
Stellar age: Not reported by the NASA Exoplanet Archive
Distance: 661.873 parsecs
Right ascension: 12h30m31.54s
Declination: -01d09m39.30s

Discovery

Detection and provenance

Discovery method: Transit
Discovery year: 2,018
Publication date: 2018-08
Discovery locale: Space
Facility: K2
Telescope: 0.95 m Kepler Telescope
Instrument: Kepler CCD Array
NASA Exoplanet Archive: Open composite record ↗

Visual archive

Gallery

One image from K2-258 b.

Generic neptune like catalog artwork; not a direct image of K2-258 b — Apex Andromeda catalog artwork